Work guide-button for buttonhole-sewing machines.



PATBNTED 00T. 9, 1906.

D. B. ASHMAN.. WORK 'GUIDE BUTTQN PoR BUTTONHOLE SEWING MACHINES.

APPLICATION FILED JAN.27, 1906.

Snowdon aktmnuf( DAV-ID B. ASHMAN, OF BALTIMORE, MARYLAND.

WORK GUIDE-BUTTON FOR BUTTONHOLE-SEWING MACHINES.

Specification of Letters Patent.

Patented Oct. 9, 1906.

Application filed January 27. 1906. Serial No. 292,105.

To all whom it may concern:

. Be it known that I, DAVIDB. AsHMAN, a citizen of the United States, residing at Baltimore, in the State of Maryland, have invented certain new and useful Improvements in IVork Guide-Buttons for Buttonhole-Sewing Machines, of which the following is a specification.

My invention relates to an improved work guide-button for buttonhole-sewing machines, and is particularly designed for use on what is known to the trade as the Singer buttonhole-sewing machine.

I-Ieretofore the guide-buttons employed in the machines referred to have been made of a single piece of metal and although only a slight portion of the button is subjected to wear the whole button must be discarded when that one part is sufliciently worn to interfere with the character of the work. This entire discarding of the button is objectionable, not only because good and unworn parts are thrown away, but also because those unworn parts contain features of constructions that meet the wants of the particular manufacturer using the buttons. These special features vary according to the ideas of the manufacturer and they relate to the particular formation of the slot through which the needle passes and the position of the gimp-hole with respect thereto. It is desirable, therefore, as the wear on these parts is almost nothing that they be retained and only the worn parts replaced.

By my invention I am able to provide a button that will fulfil these requirements and enable the worn parts to be removed without the necessity of discarding the entire button.

As the disclosure of the invention is directed to those skilled in the art to which the invention relates, it is deemed sufficient to illustrate the button only.

The accompanying drawings illustrate the invention, in whichl Figure 1 shows a top plan view of the improved button, Fig. 2 an edge view of the same, Fig. 3 a bottom plan view of the same. Fig. 4 is a perspective view of the permanent button portion, Fig. 5 a similar view of the removable portion of the button, and Fig. 6 shows a sectional elevation through the two portions of the button.

Referring to the drawings by numerals, 1 designates the base of the permanent button portion, which is provided with a central hollow stud 2, closed at its outer end, and which closed end is provided with the usual slot 3 for the passage of the needle and a gimp hole or perforation 4 adjacent said needle-slot. These parts are preferably formed in one integral piece; but this is immaterial so far as the present invention is concerned.

A removable sleeve or collar 5 surrounds the stud 2, and. in the present instance the sleeve is attached to a plate 6, from which the sleeve 5 projects and by means of which said sleeve may be secured to the base 1 of the permanent button portion. The outer end of the sleeve is provided with a circular flange 7 which has position in a plane below the closed end of the stud 2. The sleeve may be iitted over the stud and held thereon by screws passing through the plate 6 into the base-plate 1.

It will be understood by those skilled in the art that the cloth-holding clamp of the sewing-machine is guided in its movement around the button by frictional contact with the sleeve and when the sleeve beco/mes worn it alone may be removed from the stud and replaced by a new sleeve and the specially-constructed and permanent stud is retained, Another advantage gained by means of the movable sleeve or collar 5 is that as the wear on the sleeve takes place at one side only-to wit, that side against which the work-holder is pressed-when said side becomes worn the sleeve may be slightly rotated on the stud and an unworn side thus be presented to the work-holder. Thus by shifting the sleeve or the stud the life of the button may be prolonged.

' Having thus described my invention, what I claim as new, and desire'to secure by Letters Patent, is-

1. A guide-button" for sewing-machines having a base-plate for rigid attachment to the machine witha permanent stud projecting from said base-plate, and a work-holder guide device around the stud and removably attached with respect thereto whereby the guide device when worn may be removed independently of the stud.

2. A guide-button for sewing-machines having a base-plate; a stud projecting from the base-plate and having perforations in its end, said stud having a uniform cross-sec tional dimension from the base-plate to its upper end and a removable sleeve fitting over the stud and secured to the base-plate.

IOO

IIO

3. A guide-button for seWing-rnaohinesv the Work-holder and means whereby when having a base-plate a stud projecting from one portion of the .sleeve becomes Worn it said base-plate and having perforations in its may be partly rotated on the stud to present end, a sleeve surrounding the stud and hevan unworn surface to the Work-holder. 15

5 ing a. plate at one end by which it may be In testimony Whereot1 I alix my signature eoured to the base-pleteJ1 ard also hlving a, in presence of tWo Witnesses.

an 4e at its o osite en a. jacent t e erf foraed end ofptibe stud. p DAVID B' ASHMAN 4. A guide-button for sewing-machines Witnesses: ro having a, stud with a perforated end, a, re- CHARLES B. MANN, Jr.,

movable sleeve around the stud for guiding JOHN W. HEWES. 

